7.8

CVE-2013-5479: cisco ios Improper Input Validation

CVSS: 7.8v2.0HighModified
Published 27-09-2013Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2013-5479 is a high (CVSS 7.8) Improper Input Validation vulnerability in cisco ios. EPSS estimates a 1.89% chance of exploitation in the next 30 days, higher than 79.3% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
1.89%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-09-2013
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

1.89%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.89% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.89%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco1 product
  • ios12.2 | 15.0 | 15.1 | 15.2 | 15.3

1 vendor · 1 product

References

1 links